Fly-paper



(No Model.)

0. THUM.

FLY PAPER.

Patented May 22,1883.

llllll fill Inunor we T/czaTL i is of making and packing stickyfly-paper; and

A UNITED STATES PATENT OFFICE.

OTTO THUM, OF GRANDRAPIDS, MICHIGAN.

FLY-PAPER.

To all whom it may concern:

Be it known that 'I, Or'ro Trauma citizen of the United States, and aresident of Grand Rapids, in. the. county of Kent and State of Michigan,have invented a new and useful Im-' provement in Fly-Paper; and Idohereby declare that the following is a full, clear, and exactdescription of the same. l

Sticky fly-paper, as ordinarily manufactured, consists ot a sheetofsized paper coated with an adhesive mixture of resin and castor-oil, amargin being left uncoated for convenience in separating the sheets. Thecoated sheets are in some casesfolded centrally,withuthe coated sidesinward, andin lots of from twenty-five to one hundredpackedin boxes forthe. trade. In warm weather the adhesivegcoating loses its consistency,soi'tensand runs freely, and its. tendency to spread is greatlyincreased by the pressure of the sheets packed closely together,theresult being that the coating is pressed out over the uncoated marginand ex- .udes between thesheets, soiling and sticking them together, andrendering them practically offiy-paper cannot be kept on hand, since thedemand for it is seldom uniform, and unless sold at once it spoils andremains on the dealers hands.

My invention relates to an improved method its object is to prevent therunning and spread ing of the adhesive coating under any circumstances,so that largequantiti'es of the paper may be packed and transportedwithout deterioration and kept on hand.

lhe invention consists in surrounding the adhesive coating with materialof such a nature that it will adhere slightly to an adjoining sheet, butwill separate readily 'for use,

. and when the sheets are in contact will prevent the adhesive coatingfromspreading.

The invention is illustrated in' the accompanying drawing, which shows asheet of fly-paper in plan view.

In preparing my fiy-paper, I take a sheet of sized paper, A, and coatthe central portion, B, with any proper adhesive composition, or,leaving a wide margin, a, on all sides. About twice the quantity ofadhesive material needed forvone sheet is used, and the coating ispreferably accomplished by suitable machinery. Around the margin oredgeof the sticky materialI place-a strip or layer, a, of some com-SPECIFICATION forming part of Letters Patent No. 373,294, datedApplicationfiled Febrnary27,1883. (No modelJ' May 22, 1883.

position which will adhere closely to paper, but maybe readily detachedtherefrom. This substance (preferably a resinous compound) entirelysurrounds the sticky material on the sheet. Another prepared sheet isnow placed face downward upon the first and immediately becomes coatedwith its properamount of adhesive material. At the same time the papermargins adhereto the band or strip it, so that all the sticky substanceis inclosed within such strip. Under these circumstances itisimpossiblefor it to spread beyond the surrounding compound,and as there is a widemargin of paper outside the strip a the sheets may be readily separated,while such margin is always keptclean.

'1 do notlimit myselfto any particular manner of making and coating thefly-papeiy nor toany certain composition for that purpose, since variousmeans and various compounds may be employed.

When coated in this manner any number of prepared sheets may be packedtogether for shipment and sale without danger ofthe sticky substancerunning or spreading at any temperature. It will ot'course be understoodthat the surrounding com pound is only slightly ad- I desire to disclaimthe method alluded to as forming any part of my invention.

Having described my invention, I claim A sheet of fly-paper partiallycovered with a sticky composition, the latter being surrounded with aband or margin of less but still slightly adhesive material.

In testimony where fI have signed my name to this specification inthepresence of two subscribing witnesses.

OTTO THUM.

Witnesses: p

FREDERICK LOETTGERT, HUGO THUM.

ICO

